I bought a prepaid plan ‘Nationwide Talk, Text and Data 40’ that should be valid for 30 days on MAY 10. If count 30 days from MAY 10 (including MAY 10) then it should be renewed on JUN 9, but Telus says it will be renewed on JUN 8. So each time I will get only 29 days of my plan working instead of 30 days. Why?